K Pierroton-France
- Objective
- Analysis of irrigated maize response to Potassium nutrition
- Description
- The trial has been put into fallow since 2016
- Data Access Statement
- Available to any researcher on request
- Data license
- Don't know
- Data policy
- Yes (not online)
- Organization
- French National Institute for Agricultural Research (INRA)research organisation
- People
- Dr Jordan-Meille Lionelexperiment managerInstitut National de la Recherche AgronomiqueAgriculture-EnvironnementDr Mollier Alainprincipal investigatorInstitut National de la Recherche AgronomiqueAgriculture-EnvironnementDenoroy Pascaldata managerInstitut National de la Recherche AgronomiqueAgriculture-Environnement
Site: K-Pierroton France
- Local code
- 33610
- Location
- Pierroton-CestasNouvelle AquitaineFrance
- Geographic location
- 44.7417, 0.7831
- Elevation
- 58 Metres
- Slope
- 0° (flat facing)
- Visits permitted?
- Yes
- Visiting arrangements
- email booking
- History
- Converted from pine forest to maize crop in 1995. The field is still surrounded by planted pine forest.
- Management
- Irrigated crops. Mainly maize, and occasionally some legumes (carrots, peas...) as main crops. No inter-cropping.
- Soil type
- podzol
- Soil description
- In the ISRIC nomenclature (Word soils Information service), the soil is described as an "Umbric ortsteinic podzol" It is a naturally acid sandy podzol, rich in organic matter (the soil is often described as a "black sand"). Below 50 t0 80 centimeters, there is a hard layer of Iron oxydes and hydroxydes, mixed with organic matter, called "Alios". Roots can not go through.
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? soil pH 0 – 25 Centimetres 6.2 (5.5 – 6.5) 2014 soil density 0 – 25 Centimetres 1.36 Kilograms per litre 2014 cation exchange capacity 0 – 25 Centimetres 5 (4 – 6) cmol per kilogram 2014 soil organic carbon 0 – 25 Centimetres 22.6 gram per kilogram 2014 sand content 0 – 25 Centimetres 933 gram per kilogram 2014 silt content 0 – 25 Centimetres 21 gram per kilogram 2014 clay content 0 – 25 Centimetres 47 gram per kilogram 2014 - Climatic type
- temperate oceanic climate
- Climate description
- Dryer season during summer. Can be very hot from 15th July to 15th August. Strong spring winds can destroy seedlings with sans saltation.
- Climate properties
Variable Time period Value (range) Units precipitation 1980 – 2018 900 (633 – 1231) millimeter evapotranspiration (Penman) 1980 – 2018 868 (721 – 988) millimeter solar radiation 1980 – 2018 4829 megajoule per square meter air temperature 1980 – 2018 13.45 degree Celsius thermal time (base 6) for maize production 1980 – 2018 (2700 – 3500) degree-days
Design period: K-Pierroton France as Maize, first period (1996-2001) with a 0 K treatment (1996—2001)
- Design Type
- Randomized complete block design
- Description
- This K fertilization trial has 5 K modalities and 4 blocks. It has been divided into three periodes. The first period (1996-2001) applied doses from 0 to 160 kg K par ha (approximately 4 times the exports), the second period (2002-2013) applied doses from 20 to 160 kg K per ha, and the third period used the trial to test Water and Potassium interactions (2014-2015). The main crop was maize; we have used 3 successive varieties during the period (Volga, Cecila, DKC5783). In 2006, 2010 and 2013, the trial was occupied by a fallow, carrots and beans, respectively.
- Design description
- plot dimensions: 18 m X 12.8 m 5 K doses (0- 0.5 - 1 - 2 - 4 times the exports) 0 - 20 - 40 - 80 - 160 kg K/ha/year
- Number of blocks
- 4
- Number of plots
- 20
- Number of subplots
- 0
- Number of replicates
- 0
- Number of harvests per year
- 1
- Crop
Crop Years grown maize 1996—2015 - Factor
- Factor name
- Factor levels
- potassium fertilizer exposure The K fertilizer is spread before ploughing and then mixed in the 25 first centimeters. Values of K applied are expressed in K and not in K2OPlot application: Whole plot
potassium (0 kg/ha)
1996—2001Applied to crop: maizeApplication frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (20 kg/ha)
1996—2001Applied to crop: maizeApplication frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (40 kilogram per hectare)
1996—2001Applied to crop: maizeApplication frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (80 kilogram per hectare)
1996—2001Applied to crop: maizeApplication frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (160 kilogram per hectare)
1996—2001Applied to crop: maizeApplication frequency: 1Application method: broadcast application methodChemical form: potassium chloride
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait maize t/ha 1 16 meters 2 consecutive lines of 8 meters manually sampled thousand grain weight maize g 1 16 meters 2 consecutive lines of 8 meters manually sampled grain quality traits maize N/A 16 meters number of grains per cob potassium content maize mg/kg 1 16 meters grain quality traits maize % 1 16 meters water content potassium content Soil mg/kg 0.25 plot Soils are collected every 4 years (0-25 25-50 50-75 cm)
Design period: K-Pierroton France - K and Water interation (2014-2015) (2014—2015)
- Description
- This trial crosses the effect of the 5 K treatments with two water modalities. The "non-stressed" plants receive as much water as needed (ETc calculations), and the "stressed" plants are only irrigated in order to keep the soil water content just above the wilting point.
- Design description
- Initial blocks 1 and 2 have been gathered for the "watered plants" modality, and blocks 3 and 4 have been gathered for the "limited watered plants" modality. So each one of the water modality has only two replicates. plot dimensions: 18 m X 12.8 m 5 K doses (0.5- 0.75 - 1 - 2 - 4 times the exports) 20 - 30 - 40 - 80 - 160 kg K/ha/year
- Number of blocks
- 0
- Number of plots
- 20
- Number of replicates
- 2
- Number of harvests per year
- 1
- Crop
Crop Years grown maize 2014—2015 - Factors
- Factor name
- Factor levels
- potassium fertilizer exposure The units of K applied is kg of K per ha and not K2OPlot application: Whole plot
potassium (20 kilogram per hectare)
2014—2015Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (30 kilogram per hectare)
2014—2015Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (40 kilogram per hectare)
2014—2015Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (80 kilogram per hectare)
2014—2015Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (160 kg/ha)
2014—2015Applied to crop: maizeApplication frequency: 1Application method: broadcast application methodChemical form: potassium chloride- irrigation process levelPlot application: Sub plotEffect: Direct
water stress (350 mm)
2014—2015Applied to crop: maizeApplication method: aerial applicationwater stress (550 mm)
2014—2015Application method: aerial application
- Factor combinations
- Interaction K X Water 2014—2015 The two levels of water availabiity are applied to the five K treatements. The effects of water, potassium and their interactions are studied.
- potassium fertilizer exposure: -
- Interaction K X Water 2014—2015
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait maize t/ha 1 16 meters thousand grain weight maize g 1 16 meters grain yield trait maize 1 16 meters number of grains per cob potassium content maize mg/kg 1 16 meters grain yield trait maize % 1 16 meters water content potassium content Soil mg/kg 1 16 Soils were collected in 2014 and 2015 (0-25 25-50 50-75 cm)
Design period: K-Pierroton France as maize, Second Period (2002-2013), without any 0 K modality plots (2002—2013)
- Description
- This K fertilization trial has 5 K modalities and 4 blocks. It has been divided into three periodes. The first period (1996-2001) applied doses from 0 to 160 kg K par ha (approximately 4 times the exports), the second period (2002-2013) applied doses from 20 to 160 kg K per ha, and the third period used the trial to test Water and Potassium interactions (2014-2015). The main crop was maize; we have used 3 successive varieties during the period (Volga, Cecila, Mo ). In 2006, 2010 and 2013, the trial was occupied by a fallow, carrots and beans, respectively.
- Design description
- plot dimensions: 18m X 12.8m 5 K doses (0.5- 0.75 - 1 - 2 - 4 times the exports) 20 - 30 - 40 - 80 - 160 kg K/ha/year
- Number of blocks
- 4
- Number of plots
- 20
- Number of subplots
- 0
- Number of replicates
- 0
- Number of harvests per year
- 1
- Crop
Crop Years grown maize 2002—2013 - Factor
- Factor name
- Factor levels
- potassium fertilizer exposure The K fertilizer is spread before ploughing and then mixed in the 25 first centimeters. Values of K applied are expressed in K and not in K2O
potassium (20 kg/ha)
2002—2013Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (30 kilogram per hectare)
2002—2013Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (40 kilogram per hectare)
2002—2013Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (80 kilogram per hectare)
2002—2013Application frequency: 1Application method: broadcast application methodChemical form: potassium chloridepotassium (160 kilogram per hectare)
2002—2013Application frequency: 1Application method: broadcast application methodChemical form: potassium chloride
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait maize t/ha 1 16 meters 2 consecutive lines of 8 meters are manually sampled thousand grain weight maize g 1 16 meters 2 consecutive lines of 8 meters are manually sampled grain yield trait maize 1 16 meters number of grains per cob potassium content maize mg/kg 1 16 meters 2 consecutive lines of 8 meters are manually sampled grain yield trait maize % 1 16 meters water content
Related publications
- Leaf area establishment of a maize (Zea Mays L.) field crop under potassium deficiency 10.1007/s11104-005-0695-z [In English]
- How Does Water-Stressed Corn Respond to Potassium Nutrition? A Shoot-Root Scale Approach Study under Controlled Conditions 10.3390/agriculture8110180 [In English]